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Difference between revisions of "Help:Manual of Style (dates and times)"

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(Rewrite and categorize)
(PrimePages fixed their dates, so this section is now irrelevant.)
 
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This page describes how to handle old (before ca. 1996) [[The Prime Pages|PrimePages]] data when importing it into this Wiki.
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==Overview==
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This page serves as a style guide for dates and times on the Prime-Wiki.
  
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==Importing dates==
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==In general==
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Several dates in the PrimePages prior to about 1996 are placeholders, where only part of the date (and none of the time) is actually known. A date can usually be identified as a placeholder if the time is "4:59:59" or "5:59:59". Most placeholders, but not all, are on the first day of the month. All/most of the old dates/times were entered in CST/CDT ([[wikipedia:Central Time Zone|U.S. Central Time Zone]]) as the last day, minute, and second of the month/year in which they were discovered, i.e. local time of 23:59:59. When PrimeGrid took over management of the site, all of the times were converted to UTC. This had the effect of adding 5 (if that date fell within daylight saving time under the rules of that time) or 6 hours (otherwise) to them, resulting in all these placeholder dates now being shown on the 1st of the following month.
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===Dates===
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* All dates shall be in year-month-day order and be all-numeric (<code>YYYY[-MM-DD]</code>), as in [[wikipedia:ISO 8601|ISO 8601]].
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* CE/BCE shall be used in preference to AD/BC for years in the classical period.
  
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When importing placeholder date data into the Wiki for prime submissions at the PrimePages, we follow this procedure:
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===Times===
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* All times shall be based on a 24-hour clock (<code>HH:MM[:SS]</code>).
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* If the date is Jan. 1st, use only the prior year with no month or day, e.g. "1/1/1990" is shown here as "1989".
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* There is no consensus yet as to a standard time zone for this Wiki.
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* If the date is the 1st of some other month, use the year and month of the previous month, e.g. "3/1/1993" is shown here as "1993-02", with no day shown.
 
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* Otherwise, use the full date of the previous day, e.g. "9/3/1994 04:59:59" is shown here as "1994-09-02".
 
  
 
[[Category:Help]]
 
[[Category:Help]]

Latest revision as of 17:36, 12 November 2024

Overview

This page serves as a style guide for dates and times on the Prime-Wiki.

In general

Dates

  • All dates shall be in year-month-day order and be all-numeric (YYYY[-MM-DD]), as in ISO 8601.
  • CE/BCE shall be used in preference to AD/BC for years in the classical period.

Times

  • All times shall be based on a 24-hour clock (HH:MM[:SS]).
  • There is no consensus yet as to a standard time zone for this Wiki.
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